Revenue Recognition - Contract Cost (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Capitalized Contract Cost
Allowance for credit losses	$ 19,000,000		$ 19,000,000
Contract acquisition costs
Capitalized Contract Cost
Capitalized Contract Cost, Net	76,000,000	$ 76,000,000
Costs incurred	17,000,000	15,000,000
Amortization	(15,000,000)	(14,000,000)
Change in contract costs held for sale	(4,000,000)	0
Capitalized Contract Cost, Net	74,000,000	77,000,000
Contract acquisition costs | Disposal Group, Held-for-sale, Not Discontinued Operations | EMEA Business
Capitalized Contract Cost
Capitalized Contract Cost, Net	6,000,000
Capitalized Contract Cost, Net	10,000,000
Contract acquisition costs | Discontinued Operations, Held-for-sale | Latin American Business
Capitalized Contract Cost
Capitalized Contract Cost, Net		0
Capitalized Contract Cost, Net		0
Contract fulfillment costs
Capitalized Contract Cost
Capitalized Contract Cost, Net	106,000,000	99,000,000
Costs incurred	23,000,000	21,000,000
Amortization	(16,000,000)	(20,000,000)
Change in contract costs held for sale	(14,000,000)	0
Capitalized Contract Cost, Net	99,000,000	100,000,000
Contract fulfillment costs | Disposal Group, Held-for-sale, Not Discontinued Operations | EMEA Business
Capitalized Contract Cost
Capitalized Contract Cost, Net	0
Capitalized Contract Cost, Net	$ 14,000,000
Contract fulfillment costs | Discontinued Operations, Held-for-sale | Latin American Business
Capitalized Contract Cost
Capitalized Contract Cost, Net		27,000,000
Capitalized Contract Cost, Net		$ 27,000,000